Nesting culvert.



A. A. AMBLER.v

NESTING GULVBRT.

APPLICATION FILED SEPT. 6, 191s.

1,082,578, A Patented 1360.30, 1913.

2 SHEETS-SHEET 2.

Witnesses: Invent-o1 MNM w i unirsi) strnrns PATENT OFFICE.

ARTHUR A. AMBLER, o

,e NEs'rrNo commer.

,-.- they maybe nested for storage and shipment, joint devices being provided for s e- L gicuring the sections together. 'A

The present invention will be readily un-l Ederstood from, the following description 'taken `in connection with the accompanying drawings=inwhich:- 02 Figure 1 isaside elevation of several secunited: Fig. 2 a plan of one of the sections in' assocationewith one of its endwise neighboring sections, together with one of the longitudinal joint-pieces: Fig. 3 a transverse,

f se'ction of the culvert: and Fig. 4, L longitudinal section of u portion `of the )ointffpie- :In the drawings 1, indicates one of Ithe culvert-sections, semicirculur iir cioss-section, inthe illustrated example, thesection being,` formed of sheet metal circumferen v tinllycorrugated', the section being illustrated in F ig. 1 as being. at the top ofthe 5= culvert; 2, a second similar section at the top of the culvert, the contiguous ends of the two sections of half-culvert adjoining by having the end of one section .overlapping the'end'of the contiguous section suffi-- 40 ciently to enable the first corrugations on the the nestoi sections, thus providing for c rgrooves formed in the'upper'andlower 'edges 1 ends-of the sectionstoengageeach other: 3, one of the bottom sections of the culvert,

'similar to .the top section and Yto be siiiii` larly` arranged ina longitudinalseries, with 455 their. ends similarlynnited by overlapping corrugationsthe longitudinal edges-of the half culvert'` represented by the upper sectionsr'esting over but' not in Contact .with the. upper edges of the lower half culvert:

0- 4,""the space extending longitudinally bef' tween the contiguous edges of the upper und llower halfculvertsz 5," a transverselyJ cori'vrugated cover-strip disposed upon the interior of. the culvert and covering the joint 55 betweenl the upper and lower sections, this Specicatiou of Letters Patent. Application led September 1913. Serial N0. 788,3955

tionsor. parts of sections associted `and Patented Dense, 1913.

' cfer-strip being preferably about the length of one of the' culvert sections and there being a sufficient number of them to cover the entire-open joint 45 between the upper and lower halfculvert sections: -6, a

disposed at the outside of thejoint between F .MIDDLETOWN, OHIO, AssIGNoR To THE AMERICAN ROLLINGy MILL Co., or NEWARK, NEW

i 60 similar transversely corrugated cover-strip` the upper and lower halfculvert sections: f l

7 rivets uniting the inner andy outer coverstrip's: 8, spacing'- pieces between the inner a/nd outer cover-strips, formed, -inthe presentinstunce, by shoulders on therivets between the two coverqstrips, sofas to form upper and lower groovesfin .the upperand. y

lower edges 4ofthe composite*'cover-strips:

and 9, the overlapping ends ofthe sections/ v at the end-joints between -sections;

' Sheetmetal culvertsre made ,in sizes va# i rying from .sixrinchesto su; feetin diamo-.

ter. Inl the 'illustration Qthecouiplete eir-v cle'of the culvert isQfrmedby two semi' circular halves unitedbyi two diametrically opposite longitudinal fjouts', Abut it' is'to be understood thetinlltlie-lirgersizes of cul- `verts itmuylbejdesiribleto form the circle of the culvertinniore t-hantwo'uarts and` to employ a' correspondingly greater number of longitudinal joints., l, Culvertsfjot this their sections two or three feetlongf character are generally'. constructed with` It is to be" observed that at the ends of' the composite cover-strips,"fform ed by the cover-strips 5 andf, the end of one member' projects endwise beyond `the other member,

and also that the outer member is narrower ,than the inner member. lThe, composite' vii 'cover-strips are, preferably, about the length i of the culvertlsections. The individuel 'culvertnested, and 'the cover-strips pertaining"- to pactness in storage and shipping.

of the composite cover-'strips,.by"inens` of sections 'mayi be iQ admit the iungidinn jointedgee of the-..5 sections without requiring veryconsiderable force. Y l In erecting the culvert for lise, the 'lower vsections .fire arranged in line, preferably en f Composite cover-stripjsin ,Sutiicieiit i ium' ber are then to have their lowei` groovesl applied'over the upper' edges of the lower half. culvert, with the cover-strips breaking joint with the lower sections, and fractional `\-\c overstrips being employed if needed. The

upper sections are then to ,be applied, with their contiguous ends overlapping and with their end joints breaking joint with the end joints of the lower culvert section and`wit-h ,the joints of the cover-strips, the lower edges ofthe upper sections engaging down in the grooves of the cover-strips.l 'One or 'more fractional top culvert sections may beentployed if needful in securing proper lengths and the matching yof ends with the lower half-culvert.

In applying thev composite cover-strips to the upper 'edges of Athe -lower sections, the superior `iv'idtli of.one of the .members of each stripperinits of a positioning and' steering operation, not possible if both nicmbers of the composite'stripwere ofthe same width, also, does the projection of the .end of a member of the,coinposite cover-strip facilitate'the pbsitioning, not only of the top culvert sections but of the endwise contiguous cover-strips. It is preferred to give to the inside cover-strips a transverse curvature of greater radius than the curvature ofthe culvert sections, but the outside coverstrips'may be transversely flat, this construction resulting in the upper and lower grooves in; the cover-strips being wider at their outer vextremities than down at the rivets, thus providing the grooves wit-li entering throats for the edges of the culvert sections. 'lhe grooved cover-strips when formed of inner and outer. components, as in the illustration, may have those components spaced apart to foi-in the grooves by any suitable means, such as-enlai'ged bodies on the rivets, or washers on the rivets between the ,outerand inner members of the composite cover-strips. Owing to the fact that the upper culvert-sections break joint with the lower culvert-sections and that the contiguous ends of the composite coverstripsare' in overlapping arrangement, the

space t between contiguous horizontal edges of'the culvert-sections is not objectionable,

andthe presence of, this'space bringingy about the saving .of a certain degree of metal -in the formation of the culvert, and it is more economical than would be the providing of the longitudinal edges ovei' the culvert-sections with( notches to straddlc the rivets.

Giving consideration to one of the composite cover-strips in Fig. 3 it will be observed that the grooves are wider than the thickness of the -metal of the culvert-sections so that l'l'ievgrl ping of the cover-strip upon the edges of the culvert-sections isnoteected by direct frictional fitting or pinch- `ing, but. that the curved metal at the edge of the culv'ert-L-lieetl acts in a lever-like manner in the groove, this system giving ample stability to the join-t when formed and atv the ,same time facilitating the association of the sections and cover-strips, the resiliency of the sections permittingthe edges of thesections to be freely inserted in the grooves of the cover-strips.'

I.claiii i:- l. A nesting culvert comprising, a plu- .iality of curved 'sheet-metal culvert-sections arrangedin circumferential series with their longitudinal edges near each other, and cover-strips adapted to cover the inner and outer surfaces of the edges of the seetiops vand having grooves in their opposite edges adapted to engage the edges of the culvertsections, that portion of each cover-strip which engages within the culvert having a width differing from that. portion engaging 1 outside the culvert, combined substantially as set forth.

2. A nesting culvert comprising, a plura'lity of curved sheet-metal culvert-sections ar 'anged in circumferential series with their longitudinal, edges near each other, and cover-strips adapted to cover the inner and outer surfaces of the edges of the sections and having grooves in their opposite edges `adapted to engage the edges of the culvertsections, that portion of each cover-strip engaging inside the culvert being widerthan the portion 'engaging oi'itside of the culvert,

combined substantially as set toi-th.

3. A nesting culvert comprising, a plurality of curved sheet-metal culvert-sections arranged in circumferential series with their longitudinal edges near each other, and cover-strips adapted to cover the inner and outer surfaces ol' the edges of the sections and having grooves in their opposite edges adapted to engage the edges of the culvert-sections, the end of each cover-strip where it engages the interior of the culvert. having a projection beyond the saine end of the, cover-strip engaging the exterior of the culvert, combined substantially as set forth.

4. A' nesting culvert comprising, curved sections with their longitudinal edges near eachother, a cover-strip adapted to cover the inner surface of the longitudinal edges of the sections, a cover-strip adapted to cover the outer surface of the longitudinal edges of the sections, rivets securing the tivo cover-strips together, and spacing pieces at the rivets between the, cover-strips to space them apart suliiciently t'o admit the edges of the culvert-sections, combined' substantially as set forth.

5. A nesting culvert comprising, a plurality of curved sheet-metal culvert-sections 1 

